The CRL Wood "A" Frame Glass Truck is specially designed for handling multiple large sheets of glass. The nice feature about this truck is that the load balances on the center, 10 x 2-1/2 inch (254 x 63.5 millimeter), load wheels, and tilts slightly forward or back, allowing it to turn in its own lenth making maneuvering in tight areas an easy task. Both the center load wheels and the 6 x 2 inch (152 x 51 millimeter) swivel casters are Moldon Rubber with roller bearings and lube fittings. All oak hardwood construction with hardwood handles makes this truck strong enough to handle a full load and won't scratch or mar your glass.